A 60-year-old woman was killed Monday when an oak tree fell on her mobile home as she slept, Texas officials say, bringing Hurricane Harvey's death toll to three.

Montgomery County Sheriff's officials responded to the mobile home in Porter after a large oak tree toppled onto Lisa Jones' trailer home. Jones' husband told deputies he was sitting inside the home when the tree fell.

He said he screamed for his wife, who was napping in the bedroom, but she didn't respond and he was unable to get to her. The man said he then left the home to try to find help.